lower altitudes 中文意思是什麼

Abstract : soil incubation experiments were conducted in lab to delineate the effect of soil temperature and soil water content on soil respirations in broad - leaved / korean pine forest ( mountain dark brown forest soil ), dark coniferous forest ( mountain brown coniferous forest soil ) and erman ' s birch forest ( mountain soddy forest soil ) in changbai mountain in september 2001. the soil water content was adjusted to five different levels ( 9, 21, 30, 37 and 43 ) by adding certain amount of water into the soil cylinders, and the soil sample was incubated at 0, 5, 15, 25 and 35 for 24 h the results indicated that in broad - leaved / korean pine forest the soil respiration rate was positively correlated to soil temperature from 0 to 35. soil respiration rate increased with increase of soil water content within the limits of 21 to 37, while it decreased with soil water content when water content was over the range. the result suggested the interactive effects of temperature and water content on soil respiration. there were significant differences in soil respiration among the various forest types. the soil respiration rate was highest in broad - leaved / korean pine forest, middle in erman ' s birch forest and the lowest in dark coniferous forest. the optimal soil temperature and soil water content for soil respiration was 35 and 37 in broad - leaved / korean pine forest, 25 and 21 in dark coniferous forest, and 35 and 37 in erman ' s birch forest. because the forests of broad - leaved / korean pine, dark coniferous and erman ' s birch are distributed at different altitudes, the soil temperature had 4 - 5 variation in different forest types during the same period. thus, the soil respiration rates measured in brown pine mountain soil were lower than those in dark brown forest and those measured in mountain grass forest soil were higher than those in brown pine mountain soil

文摘:為了研究土壤溫度和土壤含水量對闊葉紅松林（山地暗棕壤） 、雲冷杉暗針葉林（山地棕針葉林土壤）和岳樺林（生草森林土）的土壤呼吸的影響，於2001年9月在長白山進行了土壤實驗.利用增加土壤樣柱的含水量，將土壤含水量分為9 ， 、 21 、 30 、 37和43 5個等級，土壤樣品分別在0 、 5 、 15 、 25和35的溫度下保持24小時.闊葉紅松林土壤在0 （ 35范圍內，土壤呼吸速率與溫度呈正相關.在一定的含水量范圍內（ 21 （ 37 ） ，土壤呼吸隨含水量的增加而升高，當含水量超出該范圍，土壤呼吸速率則隨含水量的變化而降低.土壤溫度和水分對土壤呼吸作用存在明顯的交互作用.不同森林類型土壤呼吸作用強弱存在顯著差異，大小順序為闊葉紅松林>岳樺林>雲冷杉暗針葉林.紅松闊葉林土壤呼吸作用的最佳條件是土壤溫度35 ，含水量37 ;雲冷杉暗針葉林下的山地棕色針葉土壤呼吸作用的最佳條件是25 ， 21 ;岳樺林土壤呼吸作用的最佳條件是35 ，含水量37 .但是，由於長白山闊葉紅松林，雲冷杉林和岳樺林處在不同的海拔帶上，同期不同森林類型土壤溫度各不相同，相差4 ~ 5 ，所以野外所測的同期的山地棕色針葉林土呼吸速率應低於暗棕色森林土呼吸速率，山地生草森林土呼吸速率應高於山地棕色針葉林土的呼吸速率.圖2表1參25

Soil incubation experiments were conducted in lab to delineate the effect of soil temperature and soil water content on soil respirations in broad - leaved / korean pine forest ( mountain dark brown forest soil ), dark coniferous forest ( mountain brown coniferous forest soil ) and ermans birch forest ( mountain soddy forest soil ) in changbai mountain in september 2001. the soil water content was adjusted to five different levels ( 9, 21, 30, 37 and 43 ) by adding certain amount of water into the soil cylinders, and the soil sample was incubated at 0, 5, 15, 25 and 35 for 24 h the results indicated that in broad - leaved / korean pine forest the soil respiration rate was positively correlated to soil temperature from 0 to 35. soil respiration rate increased with increase of soil water content within the limits of 21 to 37, while it decreased with soil water content when water content was over the range. the result suggested the interactive effects of temperature and water content on soil respiration. there were significant differences in soil respiration among the various forest types. the soil respiration rate was highest in broad - leaved / korean pine forest, middle in ermans birch forest and the lowest in dark coniferous forest. the optimal soil temperature and soil water content for soil respiration was 35 and 37 in broad - leaved / korean pine forest, 25 and 21 in dark coniferous forest, and 35 and 37 in ermans birch forest. because the forests of broad - leaved / korean pine, dark coniferous and ermans birch are distributed at different altitudes, the soil temperature had 4 - 5 variation in different forest types during the same period. thus, the soil respiration rates measured in brown pine mountain soil were lower than those in dark brown forest and those measured in mountain grass forest soil were higher than those in brown pine mountain soil

為了研究土壤溫度和土壤含水量對闊葉紅松林（山地暗棕壤） 、雲冷杉暗針葉林（山地棕針葉林土壤）和岳樺林（生草森林土）的土壤呼吸的影響，於2001年9月在長白山進行了土壤實驗.利用增加土壤樣柱的含水量，將土壤含水量分為9 ， 、 21 、 30 、 37和43 5個等級，土壤樣品分別在0 、 5 、 15 、 25和35的溫度下保持24小時.闊葉紅松林土壤在0 （ 35范圍內，土壤呼吸速率與溫度呈正相關.在一定的含水量范圍內（ 21 （ 37 ） ，土壤呼吸隨含水量的增加而升高，當含水量超出該范圍，土壤呼吸速率則隨含水量的變化而降低.土壤溫度和水分對土壤呼吸作用存在明顯的交互作用.不同森林類型土壤呼吸作用強弱存在顯著差異，大小順序為闊葉紅松林>岳樺林>雲冷杉暗針葉林.紅松闊葉林土壤呼吸作用的最佳條件是土壤溫度35 ，含水量37 ;雲冷杉暗針葉林下的山地棕色針葉土壤呼吸作用的最佳條件是25 ， 21 ;岳樺林土壤呼吸作用的最佳條件是35 ，含水量37 .但是，由於長白山闊葉紅松林，雲冷杉林和岳樺林處在不同的海拔帶上，同期不同森林類型土壤溫度各不相同，相差4 ~ 5 ，所以野外所測的同期的山地棕色針葉林土呼吸速率應低於暗棕色森林土呼吸速率，山地生草森林土呼吸速率應高於山地棕色針葉林土的呼吸速率.圖2表1參25

When one comes to more tractable land at lower altitudes, problems of permanent pasture improvement are not nearly so difficult.

在海拔較低的易於耕作的土地上，改進永久草場的問題並不很困難。

In truth, the automated refinery disappeared from all data registries, and also vanished from the skies, as an unlikely group of labor and support droids hijacked the station, and hid it in the denser, lower altitudes of bespin ' s endless skies

實際上，這個自動化的氣體精煉廠從所有的資料登記中消失了，也從天空中消失了，因為被認為不可能的一群勞工機器人和維護機器人劫持了工廠，並將它藏在貝斯平無垠的天空中大氣較為稠密、海拔較低的地方。

Besides, the information on actual height of lowest cloud base is used in constructing of cloud liquid water profile by using radiosonde profiles, that makes an improvement of relative accuracy of retrieved value of l at almost all altitudes by 5 - 20 % according to numerical simulation comparison. the lower the altitude is, the more the accuracy is improved

為減少由於回歸樣本中雲液水廓線的『失真』給反演造成的誤差，本文在對探空廓線作診斷建立雲液水廓線時，引入了實際目測的最低雲底高的信息。數值模擬比較表明該措施行之有效，使對流層中下層的幾乎所有高度上l反演值的精度提高5 - 20 ，觀測高度越低，精度提高越多。

Eventually atmospheric drag removes them from orbit by lowering their altitudes until they burn up on reentry into the dense lower atmosphere

最終空氣阻力會使它們高度降低、移出軌道，在重返地表的過程中，被濃密的低層大氣燃燒殆盡。